[mythtv-users] Excessive RingBuf Messages in mythbackend.log

Jacob Strandlien kepesk at gmail.com
Wed Nov 9 16:20:52 UTC 2011


Hello!

I'm using Mythtv 0.24-fixes (latest build) on Ubuntu, and for the past 
few weeks, I've had a super-aggravating problem with my 
mythbackend.log.  Whenever I start MythTV, mythbackend.log will fill 
with gigabytes of RingBuf messages that I can't seem to turn off.  
MythTV seems to be working properly, but I have to delete the log and 
restart the system a couple of times a day due to the hard drive filling 
up.  I can't even use logroatate to clear them periodically because it 
won't run often enough.

I've tried adding '-v none' to the backend config file in /etc/init/, 
but it doesn't stop the RingBuf messages.  The messages themselves don't 
seem to describe any errors, so I don't know that I have anything to 
troubleshoot.  Here's what they look like:

2011-11-09 06:03:25.679 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- copying data
2011-11-09 06:03:25.682 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- checksum 60654
2011-11-09 06:03:25.685 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
safe_read(... at 1343488, 65536) -- begin
2011-11-09 06:03:25.685 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) @1441792 -- begin
2011-11-09 06:03:25.686 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
safe_read(... at 1343488, 65536) -> 65536
2011-11-09 06:03:25.690 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- copying data
2011-11-09 06:03:25.693 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): rbwpos +=  64K 
requested  64K in read
2011-11-09 06:03:25.694 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- checksum 6008
2011-11-09 06:03:25.701 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): @ end of read 
ahead loop
2011-11-09 06:03:25.701 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) @1474560 -- begin
2011-11-09 06:03:25.707 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- copying data
2011-11-09 06:03:25.709 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- checksum 32092
2011-11-09 06:03:25.712 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
safe_read(... at 1409024, 65536) -- begin
2011-11-09 06:03:25.712 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) @1507328 -- begin
2011-11-09 06:03:25.716 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
safe_read(... at 1409024, 65536) -> 65536
2011-11-09 06:03:25.718 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- copying data
2011-11-09 06:03:25.720 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): rbwpos +=  64K 
requested  64K in read
2011-11-09 06:03:25.723 
RingBuf(/home/mythtv/recordings/3341_20111108210100.mpg): 
ReadPriv(..32768, normal) -- checksum 18787


Could someone point me in the right direction of either suppressing 
these logs or fixing the problem causing them if there is one?

Thanks!

-Jacob


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